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s with many ERP systems, EnterpriseOne takes advantage of the underlying concepts of the client/server architecture This allows the implementation to take full advantage of the power of the back office servers To allow for this the EnterpriseOne product uses the concept of kernel processes on any EnterpriseOne servers that execute logic (business functions or batch processes) While these processes are all generically called kernels, each of them plays an important role in the EnterpriseOne implementation by fulfilling specific purposes Working together, these server-based processes provide EnterpriseOne with a formidable amount of power and flexibility By leveraging these kernel processes, you can tune your EnterpriseOne implementation to fit the needs of your business To provide a greater understanding of the kernel processes, this chapter will review the following aspects: What is a kernel An overview of the kernel processes A closer look at the JDENET_n processes JDENET_k kernel types How to configure these kernels Rules for configuring EnterpriseOne kernel processes Strategies for configuring your server Monitoring EnterpriseOne kernel processes

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At the lowest level, a kernel is simply a daemon process that executes on the EnterpriseOne logic/application server(s) These essential background processes handle requests from development client machines, E1 HTML clients, other servers, and even third-party software There are a number of different types of kernels in the EnterpriseOne product These kernels are broken into different kernel definitions or kernel def types Each of these kernel types addresses a separate set of requirements and performs different functions Depending on what you need your EnterpriseOne server to do, the kernel processes can be tuned to meet different business needs This provides EnterpriseOne implementations with the ability to leverage separate machines for different business processes For example, you might have one server dedicated to batch processing and another server available to address business function requests from the interactive applications The separate kernel definitions allow each of the servers in our example to be tuned for specific purposes By modularizing the kernel parameters in this way, Oracle has provided the ability for

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Before we start discussing the lower-level components of the kernel processes, it is helpful to understand an overview of how the kernel processes look on the enterprise server Figure 9-1 provides a high-level view of some of the kernel processes on an enterprise server When the E1 services are started on the enterprise server, a parent JDENET_n process is spawned This master process spawns other JDENET_n and

JDENET_k processes These processes are created at startup (this can be specified in the JDEINI file via the autostart setting) or as they are needed (When EnterpriseOne receives requests, processes can be started by the main JDENET_n kernel to handle new network connections Any of these net processes can also start new kernel processes as new requests are received) The number of net and kernel processes configured to start and what type of kernels these JDENET_k processes are can be configured in the JDEINI file The Queue kernel will generate runbatches when UBE/batch request(s) are placed in the F986110 table When the runbatch completes, the job will update the F986110 table It is important to note that the EnterpriseOne processes can access other database tables as required For example, a runbatch process can access a number of different tables on the database (such as F0101, F0010) The message queues shown in Figure 9-1 are interprocess communication (IPC) resources, which are generated by calls to the operating system from the EnterpriseOne processes When packets are routed to the JDENET_n job from a client or another server, they are placed in a message queue based on the type of packet The JDENET_n processes in Figure 9-1 provide communication between clients and servers as well as from servers to servers While the JDENET_k processes are generally generically labeled kernels, they can actually be a number of different types of processes However, before we get into the specifics on each of the kernel types, let s first take a closer look at the JDENET_n process